Given: f(x) = x2 + 3x + 1 and g(x) = 2x − 3 Choose all that correctly evaluates the combined functions.

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.

Ithink i know it but i want to be sure so can you me out ?